Sophia here from Shopify. Welcome to the Shopify Community!
I understand how important it is to have accurate information on file for your account, and I'm happy to help you out with this. Since updating sensitive account information requires account authentication, I will need to send you an email to get the process started rather than helping you here in the forums.
If you already have an open ticket with our team, please share the ticket number with me here and I can check to confirm it's in the right hands. Otherwise, I can send you a new email. Thanks! Looking forward to hearing from you.